https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.8 2026-04-29T10:52:37.449Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/235996b1-b1a8-4c20-bb1f-711fb1a0c952 PHYTOPLANKTON Date=2017-03-15 User Id=mgenazzi Entity=Definition Operation=UPDATE Field=reference User Note=Definition updated System Note=update Definition Old Value=Krebs, Charles K. Ecology - 4th ed. 1994. HarperCollins College Publishers, New York, New York. New Value=Krebs, Charles K. Ecology - 4th ed. 1994. HarperCollins College Publishers, New York, New York. Date=2017-03-15 User Id=mgenazzi Entity=Definition Operation=UPDATE Field=text User Note=Definition updated System Note=update Definition Old Value=Phytoplankton is the plant portion of the plankton, the plant community in marine and freshwater situations, that floats free in the water and contains many species of algae and diatoms. New Value="Phytoplankton is the plant portion of the plankton, the plant community in marine and freshwater situations, that floats free in the water and contains many species of algae and diatoms. Date=2026-02-18 User Id=system System Note=Added narrower relation from PHYTOPLANKTON [235996b1-b1a8-4c20-bb1f-711fb1a0c952] to PHYTOPLANKTON ABSORPTION [20872a46-9d27-4e54-a0fb-1e7e384d22bd] 'Phytoplankton is the plant portion of the plankton, the plant communityin marine and freshwater situations, that floats free in the water andcontains many species of algae and diatoms. 2017-03-15 11:27:47.0